Features and Benefits
- Two 8-Bit DACs in One Package
- 8-Pin DIP/SOIC and microSOIC Packages
- +2.7 V to +5.5 V Operation
- Internal & External Reference Capability
- Three-Wire Serial Interface QSPI™, SPI™ and Microwire™ Compatible
- Individual DAC Power-Down Function
- On-Chip Output Buffer Rail-to-Rail Operation
- On-Chip Control Register
- Low Power Operation: 2.3 mA @3.3 V
- Full Power-Down to 1 µA max, typically 80 nA
The AD7303 is a dual, 8-bit voltage out DAC that operates from a single +2.7 V to +5.5 V supply. Its on-chip precision output buffers allow the DAC outputs to swing rail to rail. This device uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz, and is compatible with QSPI, SPI, microwire and digital signal processor interface standards. The serial input register is sixteen bits wide; 8 bits act as data bits for the DACs, and the remaining eight bits make up a control register.
The on-chip control register is used to address the relevant DAC, to power down the complete device or an individual DAC, to select internal or external reference and to provide a synchronous loading facility for simultaneous update of the DAC outputs with a software LDAC function.
The low power consumption of this part makes it ideally suited to portable battery operated equipment. The power consumption is 7.5 mW max at 3 V, reducing to less than 3 µW in full power-down mode.
The AD7303 is available in an 8-pin plastic dual in-line package, 8-lead SOIC and microSOIC packages.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Software & Systems Requirements
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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